Excavating-machine.



E. OTOOLE. EXCAVATING MACHINE. APPLIQATION FILED no.1 1,01 1,995.

7,1910 RENEWED 001219, 1911.

Patented Dec. 19, 1911.

5 BHEET8-BHBIIT I VENTOFI Atty WITNESSESI E. o'roouz. EXCAVATING MACHINE.

APPLICATION FILED AUG-17, 1910. RENEWED 00119, 1911.

Patented Dec. 19, 1911.

5 SKEETBBHEET 2,

N NM u N on 3 a ll llllllllll D 8 mm mm H Nwi WITNESSES: fl- I I E. OTOOLE. EXGAVATING MACHINE. nruonmn FILED we. 11. 1910. xmwnwnn 001219, 1911.

Patented Dec. 19, 1911.

6 SHEBT8-SHEET 3.

III,

1 i A I Z I INVENTOH WITNESSES:

E. OTOOLE. EXOAVATING MACHINE. Arrpwnlon rum: AUG.17,1910. nnn'nwnn 001.111.1011.

1,011,995. Patented Dec. 19,1911.

5 SHEETS-SHEET 4 B. OTOOLE. EXGAVATING MACHINE. APPLICATION FILED AUG. 17. 1910. RBNEWBD 00-1". 19, 1911. 7 1,01 1,995. Patented Dec. 19,1911.

' a BHEETSSHEET 5 wm Km INVENTOR OJ! vJ2 a411,

WQSSESI 6 UNITED STATES PATENT OFFICE.

EDWARD OTOOLE, 0F GARY, WEST VIRGINIA.

EXCAVATING-MACHINE.

Specification of Letters Patent. Patented Dec. 19, 11911.

Application filed August 17, 1910, Serial No. 577,587. Renewed October 19, 1911. Serial No. 855,641.

To all whom "it may concern:

I Be it known that I, Eowaao OToonn, residing at Gary, in the county of McDowell and State of West Virginia, a citizen of the United States, have invented or discovered certain new and useful Improvements in EX- cavatiug-Machines, of which improvement the following is a specification.

My invention relates to improvements in the structure and organization of excavating machinery; and the objects are simplicity of structure and elliciency in service.

I have applied my invention to machincry for mining coal, and in this specification I shall illustrate it in such application, but it will be understood that the invention is not limited in its applicability to excavating machinery of any one form of type.

In the accompanying drawings which form part Of this specification, Figure 1 is a plan, Fig. 2 a front elevation, and Fig. 3 a

side elevation of a coalqnining machine embodying my present invention; Fig. 4 1s a view in vertical section on a plane indicated at IVIV, Fig. 3. Fi 4 is drawn to larger scale than the other fi ures, and portions of the machine as it is t ere shown are broken away. Fig. 5 is a plan View of a machine embodying my invention but illustrating modifications in structure; Fig. 6 is a view in elevation of the modified machine of Fig. 5; and Fig. 7 is a view showing the pm of the extensible Wings extending through a slot in the bed of the machine.

In the drawings the machine is illustrated in operative position in a mine cutting, and the ad'acent mine walls are shown in sec tion. arts which are repeated in the several figures bear the same reference numerals in each case.

The machine consists essentially of a. bed

plate 1 (hollowed and shaped for purposes the machine, to bear upon the roof of the mine chamber or cutting, and by their turning to cause the bed plate with the parts which it carries to move upon its skids. 'lhcse traction wheels are arranged at 0 posite sides of the bed plate, and preferably a their axles are carried in journal bearing.

:3, movable in housings ti, and backed by springs 7 (as particularly illustrated in Fig.

3), so that the traction wheels 4 are held by spring pressure to engagement with the surface upon which they hear.

The hollow chamber 8 within the bed plate 1 opens at the forward end of the machine in an orifice 9 which extends substantially the entire width of the machine (see Fig. 9.), and this hollow chamber opens rear \vnrdly to a suction pipe 10. As indicated by dotted lines (Fig. 1), the side walls of the chamber 8 preferably'flare from the suction pipe connection to the intake. The newly-mined coal is carried-away from th cutting through this hollow bed plate 11' suction properly applied through the pipe 10. 'A pair of wings 11 pivoted at their rear ends in opposite sides of the throat of chamber 8, and pivoted at.v their. forward ends to the reciprocating frame 2, swing within the chamber as the cutter frame reciprocates. They extend vertically from floor to roof of the low chamber 8, and they serve to narrow the passageway for the coal therethrough. The particular construction of these wings will be understood by comparing Figs. 1 and 4; each is made in two extensible parts, one part being pivoted rearwardly to the bed plate and the other forwardl to the frame. The forward pivot pin 12, s own in, section on Fig. 4 and Fig. 7, extends through a slot 13 in the bed plate into which depend lugs 14 from frame 2, and a connecting bar 15 causes the wings 11 to swim in unison.

The rame 2 moves transversely upon bed late 1, and to that end the bed ,pl to may e provided with rails 16 and the reme- 2 with slide bearings 17' (see F 3). -=.The means preferably employed or moving frame 2 laterally upon these rails arena rac 18 carried b the bed plate and a. pi n 19 carried by the frame. Thejrame 2 rries at its forward end the cutting instrument,

this 'referably consists of two heads 20 rd tatab y mounted in the frame, and owned .against which it is set.

through pipe 10. The rotation of the cutter heads 20 is conveniently effected by a motor 22 carried on frame 2, the armature shaft 23 of the motor bein geared, as is illustrated in Fig. 4, to the s iafts 24 of the" cutter heads.

It is preferred to drive the frame laterally to and fro upon the bed plate from the same motor 22. To this end, the shaft of pinion 19 may be geared to the armature shaft of the motor, as is illustrated in Fig. 1. In that figure further meansare illustrated for automatically effecting reversal in the turning of pinion 19, and causing the frame to reciprocate throughout its desired range of travel. To that end, a shaft 25, geared to the shaft of inion 19, is arranged to be connected wit the armature shaft of motor 22 through a sliding sleeve 26 which forms part of a reversing ear mechanism, such as is illustrated in igi; 1. This sliding sleeve is provided with a finger 27 which, as the frame 2 approaches the limit of its traverse, enga es alternately sto s 28, 28 carried by the bed plate 1, and suc' engagement effects the shifting of sleeve 26 to its alternate positions. In this manner the desired to and fro movement of the frame 2 is efiected, being, as has been explained, referably coordinated with the rotation o the cutter heads.

It is further desirable to effect the advance of the entire machine as the frame reciprocates toefiect the cutting, and my invention further consists in providing automatic means for such advance, and in arrangin such means to operate in cotirdination with the reciprocation of the cutter frame already described. To that end, advance movement may be imparted to the machine from the same motor 22 which causes the cutter frame to travel u on the bed plate 1. As the frame 2 osci ates, it engages, near the limits of its traverse, stops 29 upon a bar 30, and shifts the bar 30 longitudinally, first in one direction and then in the other. The traction wheels 4 are preferably arran ed in pairs, as illustrated in Fig. 1, and tween each pair and mounted on a common axle with the traction wheels, is a worm wheel 31 be observed that, as the frame bears upon a A worm ar' 32 with aratchet 33 upon its shaft 'ves the worm wheel, and pa ls 84 upon bar 30 drive the'ratchet. Thus he iprocation of frame 2impartsintermitten advance to traction wheels 4. It will further teeth or picks, 21. sto

29 at one side of the machine and shi ts bar 30, it is the air of tractionwlreels at the opposite side 'w ich is turned; so the machine advances, engaging the roof above and the floor below, in a slightly zig-za course, and the depth of the cut in eacl i reciprocation of the cutter frame increases as it progresses from zero at one side to a predetermined maximum. at the other.

In the drawings, the walls of the chamber, in which the machine is placed in operative position, are indicated at C.

The mode of operation has been indicated in the foregoing description. As the cutter heads turn and cut away reciprocates, and the whole machine intermi'ttently advances; thus the coal is .cut away and the wall upon which the machine the coal, the frame acts recedes under a continuous automaticoperation. The coal cut away falls'to the mouth of the chambered bed plate, and is drawn away by suction through the pipe 10, by means which form no part of my present invention.

The machine of Figs. 5 and 6 diflers from the machine of Fi s. 1 to 4, inclusive, particularly in that t e cuttenoarrying frame which moves upon the bed plate, instead of reciprocating in right line movement, reciprocates upon a pivot With this ex lanation it is believed that the machine 0 Figs. 5 and 6 will not reqliaiire detailed explanation. In this case t e bed plate 1" has a receivin orifice 9 whichextends in a curve of whic the center is coincident with the center 40 of pivotal 'movement of the reciprocating cutter-frame 2". The frame 2 in this case is provided with a single cutterhead 20 and the cutters 21, as will be ob-' served, are mounted on a sprocket, but the detailed construction I of the cutter-head forms no part of my present invention. Suflice it to say that, as in the other case, the operation of the cutter head cuts away the coal and causes it to fall in front, of the receivin orifice '9 of the bed plate 1'. As in the ot or case, the motor 22 which drives the cutter head is effective also to reciprocate the cutter-frame, and to this end a sprocket whose position is indicated by dotted lines "in Fig. 5 driven from the motor 22, engages a chaln 42i whose opposite ends are secured to the be plate beyond .the desired limit of traverse, the chain 42 is held in engagement with the sprocket by means of Idlers 41, one on 'ei-her side of the sprocket and the direction of rotation of the sprocliet is automatically reversed by the engagement ,of a finger 27' carried by a r ver-sing' gear 125 structure with a sto 28', whic is mounted on the bed late. 11 this case, that is in the case oft e machine of Figs Mad 6, I have not shown an cofirdillal ort of the advance of. theme uponBsntraction wheels and the reciprocation offlkthe cutterframe upon the bed plate. I have shown a shaft 43 from which the traction Wheels may be driven, and it will be understood that this shaft may be moved in any desired manner and in anypreferred coiirdination with the remainder of the moving parts of the machine, as may be desired.

In the machine of Figs. and 6, it will be observed that no wings are employed with in the chambered bed plate, such as are indi rated at 11 in .the drawings which illustrate the form of machine first described, to limit the effective size of the pneumatic passage. in this machine of Figs. 5 and 6 however an apron 11 is present which covers a portion of the orifice f of the bed plate, and reduces the efi'ective size of the orifice. In the reciprocation of the cutter this apron nuives from side to side, and in its traverse uncovers at one time and another the entire the same end, namely, the

'- coal away from the cutter extent of the orifice 9. I prefer to have this apron lie immediately behind the cutter ad as the drawings show. However, as noted abide, the detailed construction of the cutter head doesnot form a part of my present invention.

It will be observed that the wings 11 of Figs. 1 to 4;, and the apron ll of Figs. 5 and 6, are alternative means for reaching reduction of the efi'eetive area at anv given time in the op- 1. tion of the machine of the orifice 9 or 9. This provision made to the end that the power ot the air current in drawing the shall be made more eit'ective.

The mirhine is uill be undeist the aui ject. low scams, thick ll hile I have, in the foregoing specification, described with some particularity the organization of my machine, I do not intend primarily designed, as ood by those familiar with for cutting coal in relatively or for undercutting relatively thereby to limit my invention in its broader t to those spot-i it details. As I have lv ted my invention is embodied in cunning machine shown and de H'Fllltt but I do not intend to limit my in-- relation pm-tirnlarly to that one application.

claim lien-in as my invention:

i in an excavating rnaehinethe combination of a bed-plate, a cutter-head reciprocatory thereon. said bed-plate being provided with a passageway for excavated material and with an intnkeextending beneath the path of reei inm'ation of said cutter-head, and means for causing a forward feed of said luulplate, said feeding means being effected by the reeiprmrntion of the saidcutter beud, substantlally as described.

2. In an excavating machine the combination of a bed plate and a cutter reci recatory thereon from side to side, said bed plate sing provided with a passageway for excavated material and with an intake to said passageway, said intake arranged beneath the cutter and extending substantially throughout the range of its lateral reciprocation, substantially as described.

3. In an excavating machine, the combination of a hollow bed plate open anteriorly and united osteriorly to a suction pipe, a cutter-aren't? frame reciprocatory upon said bed plate, and a pair of passage-forming wings arranged within said bed plate and pivoted posteriorly to said bed plate'and anterior-[y to said cutter frame, substantially as described. i

4. In an excavating machine, the combination of a bed plate provided at opposite sides with traction wheels and provided with a passageway for excavated material, a cutter frame reciprocatory thereon, and a driving mechanism for each of said traction wheels. the driving mechanism for each of said wheels operated -by reciprocation of said cutter frame tothe opposite side of said bed plate, substantially as described.

In an excavating machine', the combination of a bed plate providedwith a passageway for excavated material and with skids beneath engagin the floor of a cutting and traction whee above engaging the roof of such cutting, a reciprocate cutter armed frame carried on sand bed p ate, and IHt'llHS for turning said traction Wheels by the reciprocation of said frame, substantially as described.

6. In an excavating machine, the combination of a bed plate, provided with a passageway for excavated material, a cutter frame movable transversely thereon, a rack on said bed plate, a pinion rotatably mounted in said frame and by rotation efi'eeting movement of said frame upon said bed plate, a rotary, pick-aimed cutter head carried by said frame, said pinion and said cutter head connected to a common source of ower and rotating in unison, substantial y as described.

7. In an excavating machine, the combination of a frame, a pair of rotary pickarmed cutter heads mounted on parallel shafts therein, and geared to rotate in unison from a common source of power, said frame movable upon a bed plate and in movement causing the shafts of said cutter heads to move transversely in their common plane, said bed plate provided with a pas sage for excavated material, and with an intake extending beneath the ath of movement of said cutter heads, su stantially as described.

reciprocatory thereon, a pair of cutter heads carried by said frame, said bed plate wa for ex-' being provided with a passe cavated material, and

a pan 0 passage forming wingsthercin, pivoted at opposite eatory thereon, said bed-plate being proends to the said bed late and the said Yided with a passageway for excavated maframe, substantially as escribed. 1 teriai and with an intake extending beneath 20 9. In an excavating machine the coinbithe path of reciprocation of said cutternation of a bed late and a cutter reei noea head, a pair of passage forming wings pivtory thereon, sand bed plate bein provided l oted at opposite ends to said bed-plate and with a passageway for excavate material, i said cutter-head, and means for causing a and with an intake orifice to said passage forward f ed of said hedqilate, said feeding 25 Way, the intake orifice being arranged bemeans effected by the reciprocation of said neath the cutter and extending substantially cutter-head, substantially as described. throughout the range of its reciprocation, In testimony whereof, I .have hereunto and means for making efl'cctive a portion set my hand only Of the area Of the (ll'lfifie at any given t FEIV F\ time in the 0 ration of the machine, sub J stantially as escribed. 1 Witnesses:

10. Inan excavating machinathe combi- I). (i. EErcmse,

nation of a bed-plate, a cutter-head reciproi J. E. Fmxzsaa. 

